英语语法祈使句知识点:不要混淆祈使句与非谓语动词

所属专题:小学英语语法  来源:沪江小学资源网    要点:英语语法大全  
编辑点评: 英语语法让很多学生都头疼,因为复杂难懂的句式和词组有时难以记忆。小编为大家整理了小学英语语法大全,本章主要介绍英语语法中的句子成分,希望对同学们的英语语法学习有所帮助!

有这样一道语法考题,该用动词原形?还是用非谓语动词?

_________ the road round to the right and you’ll find his house.

A. Follow B. Following C. To follow D. Followed

【分析】此题容易误选B或C,许多同学一看选项就想当然地认为,选现在分词表示时间或伴随,选不定式表目的。此题的关键是要注意句中的连词and,它表明整个句子是一个并列句,即 and 前后应各是一个独立的句子,而不应是一个非谓语形式的短语,所以此题的正确答案应选A,即 and 前是一个祈使句。比较以下两题:

(1) _________ the road round to the right, she found his house.

A. Follow B. Following C. To follow D. Followed

【分析】此题应选B,现在分词短语表时间。

(2) _________ the road round to the right, the blind man asked a boy to guide him.

A. Follow B. Following C. To follow D. Followed

【分析】此题应选C,不定式短语表目的。

注意以下各题均应选A,均因为句中的并列连词 and(填空句为祈使句):

(1) _________ the milk and set a good example to the other children.

A. Drink B. To drink C. Drinking D. Having drinking

(2) _________ me, and don’t just stand there laughing.

A. Answer B. To answer C. Answering D. To be answering

(3) _________ me , and then try to copy what I do.

A. Watch B. Watching C. To watch D. Have watching

(4) _________ through this book and tell me what you think of it.

A. Look B. Looking C. To look D. Having looked

(5) _________ it with me and I’ll see what I can do.

A. Leave B. Leaving C. If you leave D. When left

注:有时可能不用连词,而用破折号(答案均选B,填空句为祈使句)。如:

(1) _________ down the radio — the baby’s asleep in the next room.

A. Turning B. Turn C. Turned D. To turn

(2) _________ some of this juice — perhaps you will like it.

A. Trying B. Try C. To try D. Having tried

以下各题也应选A,是因为句中的从属连词 when, before, until 等(填空句为祈使句):

(1) _________ left when you get to the end of the street.

A. Keep B. Keeping C. To keep D. Kept

(2) _________ you hand over your mouth when you cough.

A. Put B. Putting C. To put D. To be putting

(3) _________ him enough time to get home before you telephone.

A. Give B. To give C. Giving D. Given

(4)_________ until the lights have turned to green.

A. Wait B. To wait C. Waiting D. Having waited

(5) _________ the pieces of cloth with a loose stitch before finally sewing them together.

A. Join B. To join C. Joining D. Joined

以下各题也应选A,即填空句为祈使句:

(1) Don’t give me a long account, just _________ the plain facts.

A. tell B. telling C. to tell D. to be telling

(2) First _________ the rice by washing it, then _________ it in boiling water.

A. prepare, cook B. preparing, cooking C. preparing, cook D. prepare, cooking

(3) Don’t sit there watching — _________ and help me!

A. come B. coming C. to come D. to be coming

(4) Don’t waste your money on silly things — _________ it.

A. save B. to save C. saving D. having saved

(5) To test eggs, _________ them in a bowl of water: if they float they’re bad, if they sink they’re good.

A. put B. putting C. to put D. to be putting

但是,以下各题情形有所不同,所填部分为目的状语(用不定式,即答案均为B):

(1) _________ late in the morning, Bob turned off the alarm.

A. Sleep B. To sleep C. Sleeping D. Having slept

(2) _________ the early bus, Mr Smith got up at six.

A. Catch B. To catch C. Catching D. Having caught

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